The soft bodies are attracted to each other. Why?
I checked your file and first, I fixed the normals of the wire cube.  (flip normals)
I also applied the scale to the wire cube &gt;  (ctlr+a) apply the scale.
But what really fixed it was altering the soft body and cloth physic :
Keep thickness outer the same but set inner to 0.001
That was a kinda weird problem to solve, I've never seen anything like it before.
In fact, I think this might be useful as well, lightning strike effects or so..